Cost to install a septic tank — Centennial, CO

Last updated: September 24, 2026

What affects the price

The final bill for septic service depends on a few specific factors. The total volume of your tank, how long it has been since the last pumping, and whether the technician needs to dig to find your lids will all change the bottom line. If the system is particularly difficult to access or requires repairs to internal components like baffles or filters, the labor time increases. We provide exact pricing confirmed free on the call.

About this service

Installing a tank involves site permits, excavation, and professional connection to your plumbing. The total investment varies depending on your property's soil drainage capabilities and the tank's required volume. If the site requires extensive grading or additional filtration components, the cost increases accordingly.

Summer is a peak time for household water usage, especially with guests visiting. Extra laundry, frequent showers, and outdoor water use can stress an older system. If you have a busy house this season, keeping an eye on your drain speeds helps ensure everything keeps flowing smoothly throughout the warm months.

Frequently asked in Centennial

Also serving nearby: Aurora · Denver · Lakewood · Westminster · Arvada

All cities in Colorado →

More on this: EPA SepticSmart — maintenance schedules.

Service area details

Serving all of Centennial — population 106,883; about 3,544 residents per square mile across 30.2 sq mi.

Neighborhoods served in Centennial: DTC (Denver Tech Center), Southglenn, Dove Valley, Mission Viejo, Willow Creek — and every surrounding area.